I have a dress collar (A thick silver chain with padlock) and an every day collar which is a Black aluminum Turian slave collar which I have worn 24/7 since the moment Forge locked it around my neck. I love my collar. The thing to remember is having a collar that can go through airport security without sounding an alarm. The aluminum one can do this.

The link is: http://www.houseofcollars.com/viart/...57&item_id=160